Create a type F test case:
Choose Record function module in the CATT maintenance transaction initial screen.
Create a new type F test case in the Test Workbench and choose Record.
Enter the function module name in the dialog box and choose Copy.
Pass test values to the function module import, changing and table interfaces.
Run the function module.
Perform any function module dialogs.
You get the result at the end of the function module. You can now choose which comparisons are to be carried out for subsequent function module tests by selecting entries. The current result is your reference.